I figured people get lost like crazy in sky, so I’ll post some directions as I come across them.
Screenshots will be added later to assist, and once I figure out how, a video will be posted for each.

Diorite Room

Enter behind the stairwell on Genbu island (the stairwell near the teleporter)
Sneak up. You’ll need sneak on the first few levels and everything in here aggros to magic.

Start.

1. Turn Right.
2. Turn Left.
3. Turn Left.
4. (Go up the stairs)
5. Follow this path to tele #1

Tele #1 - room of weapons

1. Proceed to tele #2, Straight ahead.

Tele #2

1. Follow the path north east.
2. You may need to hit a blue Monolith to open the blue gate.
3. Follow this path to the tele #3.

Tele #3

Start off in a small room with Aura Butlers or Pots, most likely.
Only magic aggro on this level, unless you see an Aura Butler named Faust.
He aggros sight, and he is very unkind.
Find the yellow Monolith and switch it on to open the yellow gate to tele #4.
This level is kind of like a maze but if you run around enough you’ll find your way.
Just be careful of Faust.

Tele #4

You are in a large, round vacant room.
Congratulations, you really did it!

Getting to Byakko

1. Enter at Genbu island door. Sneak up, you’ll need it!
2. Go right
3. Go left
4. Go right (Yellow gate may need to be opened by a party member)
5. Follow this path and stay to the right. After veering right in a big room, you pass another yellow gate.
6. In this room there are 2 monoliths 1 for yellow 1 for blue. (A member may have to wait here to let the other member who opened the Yellow door in).
7. Follow the only path.
8. Make a right at the next room
9. Make a left
10. You will see aura butlers, make a right and proceed to the exit.